Annunciator.



No. 842,565. PATENTED JAN. 29, 1907.

H. J. KUSEL. ANNUNOIATOR.

APPLICATION FILED NOV. 20, 1905.

j snrrns PATENT OFFICE H'ARRY- J. KUSEL, or CHICAGO, ILLINoIs, AssieNoR 'ro WILLIAMSABBOTT ELECTRIC}- (:JQMPAQNY, or CLEVELAND, 01110, A CORPORATION or 01110.

'ANNUNCIATOB.

- .nae iasee,

I Specification of Letters Patent.

Patented Jan. 29 1907.

Application filed November 20, 1905. Serial Na. 288,119.

To all whom it may concern: I

Be it known that I, HARRY J. KUSEL, a citizen of the United States, residing at Chicago, in the countyof Cook and State of Illin'ois, have invented a certain new and useful I Improvement in Annunciators, ofwhich the following is a full, clear, concise, and exact I description, ,referencebeing had'to the ac companyin'g drawings, forming a part of this specification. L My invention relates to electromagnets and finds a useful embodiment in annun'ciators that are adapted, for example, for use in telephone-exchange. raotice, though. I do not wish to be limite in all embodiments of my invention to the particular adaptation ther eofnamed. i W f In practicing my invention the coil of the electromagnet, which is in the form of a.

2 0 spool, is inserted within a jacket or tube in such a way that it may be readily removable,

' and to this'end I pcii'ovidea-looking device having two interlo ng members, one mem- 1 her being provided upon-the spooland the 2 5 companion member upon the stationary portion of the electromagnet structure, this por-' tion being referably the core portion, that is normally ed with respect to the shell portion of the structure. The core ortion islongitudinally slotted and desirably has a spring-catch anchored in the slot, the 1 free end of the catch, owing to the resiliency of thegcatch, being normally thrust out of the slot'in the core into a position to'be engaged I 3 5 by a head of the spool. This end of the catch is located near the end of the core that is immediately opposed to the armature, and a displacement of the armature affords access to the catch, which may be depressed to re- {'4 lease the interlocking relation between the 'core and the spool, whereupon the spool may be readily'withdrawn, To facilitate the disengagement between the spool and core, I

desirably employa spring at" the opposite end of the s ool, which exerts a thrusting ac tion upon tlie spool, the spring being prefer-' ably strong enough partially to eject the -s 001 when the interl cking engagement of t e spool and the core has been broken. In order that the core and spool may be made aocessible'at the armature for this purpose and. other purposes, I desirably employ a construction that normally'maintains a substantially fixed relation between the armature-lever and the armature, but which upon manipulation will permit the armature to be folde back to afford the stated accessibility. In practicing-this feature of my invention I em loy a locking device, which in one condition of use will effect a substantially fixed relation between the armature and the armature-lever and which in another condition of use willafford' no interlocking relation between the armature and armature-lever, whereupon the armature maybe rotated-upon its pivot or shaft independently of the armature-lever. The preferred construction includes a block carried by the armature-lever and a locking-leaf that engages suitable slots in said block and the armature structure,

which, locking-leaf when in the slots of the block and the armature brings about a locking relation of said block. and armature. This locking-leaf is pivoted, preferably, to the block. There are desirably two such locking-i; 7 5 I leaves, oneon each side of the armature-lever.

-When said block and armature are locked together, they operate as a unit, whereby when the armature is attracted the armature-lever is actuated. When this lockingdeaf is not in looking relation with the block and armature, the armature may be rotated or swung with respect to the block. I

Another feature of my invention resides in providing a pair of com aratively rigid terminals for the windingo the magnet, which terminals are connected with suitable switch parts, as the strip-contacts of a spring-jack, whereby electrical association of t e magnet with its circuit is effected and the magnetspool is'prevented from rotating. This construction'thus, serves to prevent the terminals of the spool from being grounded, shortcircuited, or from otherwise contacting with any part from which they shouldbe removed. To this end the head of the spool immediately op osed to the armature, desirably has mounte thereupon the electromagnet-winding terminals having the characteristics above set forth, and the free ends of these. terminals are anchored to the switch-contacts in order that the said terminals may perform the electrical and mec anical'functions above noted.

I will explain my invention more fully by reference to the accompanying drawings, showin the preferred embodiment thereof, 13in whic mature-lever construction, together with the mounting therefor. Fig. 4 is a sectional elevation showing the manner in which the armature may be folded back with reference to the armature-lever. Fig. 5 is a View somewhat similar to Fig. 3, excepting that the armature and the block forming a part of the armature-lever are shown in section through the slots provided in the said block and armature. Fig. 6 is a view in rear elevation of the structure shown in Fig. 1, parts bein broken away. v

Li e parts are indicated by similar characters of reference throughout the different figures.

In the embodiment of the invention shown an annunciator is illustrated thatvincludes an armature a, an armat are-lever b, and a shutter a, normally maintained in position by the catch 65 at the front end of the armature-lever. The winding 6 of the electromagnet is desirably contained in a shell or jacket f, preferably formed of soft iron, this winding moved, I provide the mechanism illustrated,

6 being provided upon a spool that includes a ries a spring-catch element q, desirably in the form of a strip of resilient metal, anchored in a convenient way at its inner end to the core is and provided at its outer end with a detent or catch formation 1.

A slot g is desirably formed in the spool,, linto which the catch device 1' projects for the purpose of locking the spool and -core together. In order that the catch may be made accessible in effecting removal of the magnet-spool and in order that. said spool may be readily rei which desirably includes a block 8, forming a cured by means of locking-leaves v, one for 1 component part of the armature-lever, which block has one or moreslots if out therein, while the armature is provided with one or more slots to, that are adapted to register with the slots twhen the armature'and armature-leveroccupy their normal relative posi-- tions, in which positions they may be setion.

each pair of cooperating slots ta, said locking leav,es whenin engagement with both slots substantially constituting the armature and armature lever and operating unit. The locking-leaves are desirably pivoted in posi- In the construction shown most clearly in Fig. 5 these locking-leaves are pivoted upon the armature-lever structure and directly upon the block 8 of said structure.

When it is desired to gain access'to the spool, the locking-leaves are thrown into the position indicated in dotted lines in Fig. 5, whereupon the armature may be swung with respect to the armature-lever to some such position as that indicated in Fig. 4.

The saddles o are provided upon the shell (4 in any suitable way and carry a pivot-shaft in, that permits the bodily movement of the armature and armature-lever together when the armature and armature-leverare interlocked, and upon which the armature may be swung when the armature and armaturelever are unlocked.

In order that the removal of the magnet winding may be facilitated, I desirably employ a spring 6, which thrusts the magnetwlnding partially from the casing f when the catch 1' is released, whereafter the said winding may be grasped by the fingers and completely removed.

The spool-head it carries the terminals :2: :1), desirably in the form of comparatively rigid strips of metal suitably bent and curved so that they may project laterally through slots y in the casing or shell f, said terminals :10 desirably extending toward the rear, as indicated most clearly in Figs. 1 and 2, where,- after they are bent downwardly for connec-v tion with the contact-strips 0 by the screws 2. This construction serves to maintain such a mechanical relation between the terminals wand the contacts 0 that will prevent rotation of the magnet-winding, and thereby keep the said terminals :I; out of metallic contact with the shellf to prevent short-circuiting or grounding of the magnet-winding.

Itis obvious that changes may readily be made in the embodiment of the invention shown without departing from the spirit of the invention, and I do not, therefore,wish to be limited to the precise construction shown; but,

Having thus described my invention, I claim as new and desire to secure by Letters Patent '1. An annunciator, including an electromagnet, a spool upon which the same is disposed, a casing within which the spool is contained, and a locking device for holding the said spool in position within-the'casing ineluding one locking member carried by the spool and a companion locking member having a mounting substantially stationary with respect to the casing.

2. The combination of an annunciator Whose Winding is removable with reference to the balance of the annunciator structure, and a locking device having one locking 5 member provided upon the removable Wind- 1 ing structure and the other looking member i provided upon the balance of the annunciator structure.

3. The combination with the Winding of an annunciator of a spool carrying the Winding, a core portion. for the electromagnet over which said spool is slipped, and a locking device having one iocking member pro- 1 vided upon the core and another locking} member provided upon the spool.

4. The combination with the Winding of an annunciator of a spool carrying the Winding, a core portion for the electromagne over which said spool is slipped, and a loclr. ing device having one looking member provided upon the core and another locking 1, member provided upon the spool, the locking device upon the core being in the form of a i spring-catch, said core being slotted to re ceive said catch.

5. An annunciator, including a displace able Winding, means for holding the winding in a normal position, and a spring for displacing the Winding When said means are opa erated to permit the displacement of the a Winding.

6. An annunciator, including a displace- E able Winding, a locking device for holding the Winding in a normal position, and a spring for displacing the winding when said locking device is operated to permit the displacement of the Winding.

7. An annunciator, including a displaceab'le Winding, a casing For the winding, a locking device for hailding the Winding in a normal position in the casing, and a spring for displacing the Winding When said locking de ice is operated to permit the displacement of the Winding.

8. An annunciator, including a displaceable Winding, a casing for the Winding, a locking device for holding the Winding in a normal position in the casing, a spring for 5 displacing the Winding when said locking device is operated to permit the displacement of the Winding, and a core for the Winding mounted Within the casing, upon which said Winding is movable.

9. An annunciator, including a slotted armature-lever portion, a slotted armature, and a locking-leaf adapted to engage the slots in the armaturedever portion and the armature to bring about a fixed relation between the armature and armature lever, the armature being movable with respect to the armature-lever when said leaf is Withdrawn from an engaging slot.

In witness whereof I hereunto subscribe my name this 17th day of November, A. D.

HARRY J. KUSEL. Witnesses G. L. Carlee, LEON Srnon. 

